Frequency Electronics, Inc. FEI-Zyfer, Inc. Frequency Electronics, Inc.
GPS Time and Frequency Systems
 
 

SAASM Military Time & Frequency Systems

FEI-Zyfer offers SAASM GPS military time and frequency systems with two SAASM receiver options. Both SAASM MPE-S GB-GRAM and SAASM
Force 22E MRU receivers are available for different military applications. Each SAASM receiver is coupled with FEI-Zyfer’s proven crystal (OCXO) or Rubidium (Rb) oscillators to ensure stable holdover and output in the event of SAASM signal or other external reference signal loss.

 

CommSync II Product
Family Brochure (pdf)

 
   
 
 

 Modular systems include support for multiple input and output modules including 1 PPS, IRIG, HAVE QUICK, PTTI, IEEE-1588 PTPv2, low phase noise 1, 5, and 10 MHz sine wave as well as custom outputs. Dual Redundant modular systems (CommSync II & CommSync II-D) may be configured with two SAASM GPS Time & Frequency (GTF) modules and two power supply modules (AC and/or DC power) for redundancy with uninterrupted automatic switchover.

Monitor and Control functions are via an RS-232 communications port, a front panel keypad and display, as well as optional Ethernet plug-in modules providing Telnet, SNMP, PTPv2, and NTP. Zyfer Monitor (FEI-Zyfer's remote access utility) provides complete remote control, including system status, setup, alarm logging and user management over a standard TCP/IP connection.

 
     
  CommSync II® Model 385
Dual Redundant SAASM GPS Time/Frequency System
CommSync II is 3U high, fully-redundant modular time and frequency system combining dual SAASM MPE-S GB-GRAM or SAASM Force 22E MRU GPS receivers, oscillators, and power supplies. There are 13 rear panel option module slots available, 2 of which can be used for I/O modules as well as output modules.
 
       
  CommSync II®- D Model 407
Dual Redundant SAASM GPS Time/Frequency System
CommSync II-D is 2U high, fully-redundant modular time and frequency system combining dual SAASM MPE-S GB-GRAM or SAASM Force 22E MRU GPS receivers, oscillators, and power supplies. There are 8 rear panel option module slots available, 2 of which can be used for I/O modules as well as output modules.
 
       
  GSync® II Model 402
SAASM GPS Time/Frequency System
The GSync II is a compact 2U high, single-string, modular time and frequency system with a SAASM MPE-S GB-GRAM or SAASM Force 22E MRU GPS receiver. There are 8 option module slots available, 1 of which can be used for I/O modules as well as output modules.
 
       
  GSync® Model 391
SAASM GPS Time/Frequency System
The GSync is a compact 1U high, single-string, modular time and frequency system with a SAASM MPE-S GB-GRAM or SAASM Force 22E MRU GPS receiver. There are 4 option module slots available, 1 of which can be used for I/O modules as well as output modules.
 
       
  AccuSync II Model 405
SAASM GPS Time/Frequency System
The AccuSync II incorporates the latest developments in time and frequency technology, including off the shelf support for IEEE 1588-2008 Precision Time Protocol (PTPv2) and the latest civilian C/A and military SAASM GPS receivers. The design incorporates support for the most common output requirements, including 5 and 10 MHz Low Phase Noise (LPN) frequency references, multiple time references (NTP, IRIG, HaveQuick, TOD) and 1 PPS reference output. Additionally, the AccuSync II provides user defined options such as programmable DDS Frequency Synthesizer outputs, configurable IRIG output and multi-use 10/100 Ethernet ports. The system can also be configured as an PTPv2 Grandmaster or Slave unit.

 
       
  NanoSync IV® Model 424
Military-Grade Position, Navigation, Timing (PNT) & Frequency Reference System with SAASM GPS

The NanoSync IV is a small form factor GPS Position, Navigation, Time (PNT) and Frequency reference system that provides multiple reference outputs and includes support for NTP & PTPv2 IEEE 1588-2008. The NanoSync IV has a Rubidium oscillator and is equipped with a SAASM receiver (Rockwell-Collins MPE-S GB-GRAM or Trimble Force 22E MRU) for military users. The NanoSync IV is packaged in a small, rugged enclosure ideally suited for embedded electronic warfare applications.

The NanoSync IV-SA-Rb has been demonstrated to be compliant to the Joint Airborne SIGINT Architecture (JASA) Version 3.0, Annex 1, for Time, Frequency, Navigation and Geodesy (TFNG), making it suitable for Electronic Warfare (EW) COMINT and ELINT applications in fixed site, airborne and shipboard environments.

NanoSync IV® - Military-Grade Position, Navigation, Timing (PNT) & Frequency Reference System with SAASM GPS  
       
  NanoSync IV® Model 424 - Low Profile
Military-Grade Position, Navigation, Timing (PNT) & Frequency Reference System with SAASM GPS

The NanoSync IV Low Profile is a smaller form factor GPS Position, Navigation, Time (PNT) and Frequency reference system that provides multiple reference outputs. The NanoSync IV Low Profile has a OCXO oscillator and is equipped with a SAASM receiver (Rockwell-Collins MPE-S GB-GRAM or Trimble Force 22E MRU) for military users. The NanoSync IV is packaged in a small, rugged enclosure ideally suited for embedded electronic warfare applications.

The NanoSync IV-SA-Rb has been demonstrated to be compliant to the Joint Airborne SIGINT Architecture (JASA) Version 3.0, Annex 1, for Time, Frequency, Navigation and Geodesy (TFNG), making it suitable for Electronic Warfare (EW) COMINT and ELINT applications in fixed site, airborne and shipboard environments.

NanoSync IV® Low Profile - Military-Grade Position, Navigation, Timing (PNT) & Frequency Reference System with SAASM GPS  
 
 
  SAASM – Military GPS Receiver
The Chairman of the Joint Chiefs of Staff (CJCS) issued a mandate to begin SAASM GPS receiver deployment as of October 2002 and with full enforcement as of October 2006.

What is SAASM?
SAASM (Selective Availability Anti-Spoof Module) is the new generation military GPS receiver technology, providing a new security architecture and crypto key management infrastructure. Receiver hardware and software assets are protected by a tamper-resistant security module on the GPS receiver board. Crypto key security is protected by a new unclassified Black-Key infrastructure. Having unclassified hardware and key logistics greatly reduces the complexities of deploying military GPS.

What is Direct P(Y) acquisition?
The pre-SAASM GPS receiver technology requires the Civil C/A-Code signal to facilitate the acquisition of the crypto
P(Y)-Code signal. In addition to a properly keyed receiver, the C/A signal provides the receiver with precision time and other parameters needed to acquire the P(Y) signal. The Hot Start acquisition functionality bypasses this need, able to come on-line in the absence of the Civil, in-the-clear C/A signal. This is a vital function of the SAASM receiver technology, because in today's tactical warfare scenarios, the C/A signal may not be available in the local area of conflict.

Why use GPS SAASM in time/frequency product applications?
Many existing communications and data networks used by the government and DoD receive precision time and frequency from GPS-C/A-aided synchronization products. GPS-C/A signals/receivers can be easily jammed or degraded, causing degradation or loss of synchronization and communications, unacceptable in vital applications. The use of GPS-SAASM receivers prevents such loss of synchronization. Although GPS-SAASM receivers are “controlled items,” they are not classified. Only U.S. Government and its NATO partners are authorized to use such military receivers.

Note: U.S. Government policy restricts the sale of Precise Positioning Service (PPS) equipment to those authorized by the U.S. Department of Defense. Non-U.S. authorized users must purchase PPS equipment through the Foreign Military Sales (FMS) process.

 
 
 
 
Available Option Modules for CommSync II® and GSync® Products
 
Power Options System
Control
Modules
Frequency
Modules
Time Modules Clock Rate
Modules
Reference
Options
Antennas
and
Accessories
 
 

Product specifications subject to change without notice.

 


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